
| APR | MAY | JUN | JUL | AUG | SEP | ||||||||||||||||||||||
| Week no. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | |
| Site | Ind | ||||||||||||||||||||||||||
| Small/Essex Skipper | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 2 | . | . | 1 | . | . | . | . | ||||
| Silver-spotted Skipper | 41 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 31 | 9 | 1 | . | . | . | ||||
| Large Skipper | 10 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | 9 | . | . | . | . | . | . | ||||
| Dingy Skipper | 7 | . | . | . | . | . | . | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Grizzled Skipper | 7 | . | . | . | 2 | . | 1 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Brimstone | 28 | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | 3 | 14 | 8 | 1 | 1 | . | . | . | ||||
| Large White | 8 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 5 | . | . | 1 | 1 | . | . | . | ||||
| Small White | 10 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 5 | 1 | . | . | 1 | 3 | ||||
| Green-veined White | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | . | . | . | . | . | ||||
| Green Hairstreak | 1 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Small Copper | 7 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | 1 | 2 | 1 | 1 | . | 1 | . | . | . | ||||
| Common Blue | 22 | . | . | . | . | . | . | . | 1 | . | 3 | . | . | . | . | . | . | 4 | 8 | 3 | 1 | 1 | 1 | ||||
| Chalk-hill Blue | 8 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 4 | 2 | . | . | . | . | . | ||||
| Holly Blue | 2 | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||
| Small Tortoiseshell | 12 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | 2 | 4 | 2 | 3 | ||||
| Speckled Wood | 1 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Marbled White | 26 | . | . | . | . | . | . | . | . | . | . | 2 | 4 | 3 | 10 | 5 | 2 | . | . | . | . | . | . | ||||
| Gatekeeper / Hedge Brown | 8 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 3 | 3 | . | . | . | . | ||||
| Meadow Brown | 353 | . | . | . | . | . | . | . | . | . | . | 5 | 3 | 14 | 29 | 37 | 64 | 66 | 63 | 33 | 26 | 2 | 11 | ||||
| Small Heath | 41 | . | . | . | . | . | . | 2 | 2 | . | 6 | 13 | 2 | 8 | 4 | 3 | . | 1 | . | . | . | . | . | ||||
| Ringlet | 11 | . | . | . | . | . | . | . | . | . | . | . | 5 | 4 | 2 | . | . | . | . | . | . | . | . | ||||